Visible Past is a web-based knowledge creation and storage environment that is aware of a user’s spatial location and which delivers information on the fly, to that location, based on the user needs connected to that location. If you are, for example, in France, in front of the Tour Eiffel, Visible Past can send you information about the Tour Eiffel, to your mobile phone. Further, the cell phone can be used to rate the information or to add your own content to the site.

However, Visible Past is not just a site. It is a software solution that can be installed on any server, by anyone, at no cost. It uses open source, free software, that can be extended and adapted for any specific project.